Based on a synthetic geological study of drilling,well logging and seismic data,core observations and geochemical analysis,it is recognized that Triassic sedimentary facies in the Tahe area of Tarim Basin include brai...Based on a synthetic geological study of drilling,well logging and seismic data,core observations and geochemical analysis,it is recognized that Triassic sedimentary facies in the Tahe area of Tarim Basin include braided river deposits filling erosional valleys,and sublacustrine fan,canyon and delta facies.Braided river deposits filling erosional valleys are dominated by coarse-grained lithic quartz sandstone with oblique bedding,and represent the most important sedimentation type of sandstone in the study area.Sublacustrine fan and canyon facies are mainly distributed in the Middle Oil Member.Most delta sediments are deposited in highstand system tract(HST),Because of frequent changes in base level,delta sediments are commonly eroded and rarely preserved.Sedimentary cycles are clearly reflected by lithology,sedimentary structures and well logging data,and are closely related to the changes in lacustrine level.In accordance with the basic principle of sequence subdivision,seven type-I boundaries can be recognized in Triassic strata and six type-I sequences are subdivided correspondingly.In general,lowstand system tract(LST) is well developed within stratigraphic sequences and forms the main body of reservoir sandstone in this area;highstand system tract(HST) and transgressive system tract(TST) are often eroded by upper sequences or missed,Although various factors have different influences on terrestrial sequence stratigraphy,the classical sequence stratigraphy theory proposed by VAIL can be applied to terrestrial strata.展开更多
The relation and unity of the tectonic process and sedimentation is being paid a good deal of attention. It is very obvious that the sedimentary process of the terrestrial basin is controlled by tectogenesis. The sedi...The relation and unity of the tectonic process and sedimentation is being paid a good deal of attention. It is very obvious that the sedimentary process of the terrestrial basin is controlled by tectogenesis. The sedimentary evolution of the basin is the reflection of the tectonic evolution . The sedimentary process of the terrestrial basin has unique characteristics.(1) The scope of the terrestrial basin is mainly controlled by the fault zones.(2) The regional tectonic cycle obviously controls the sedimentary sequence boundary of the terrestrial basin. The periodicity of tectogenesis causes the periodic change of the sedimentary sequence.(3) The sedimentary model of the terrestrial basin is obviously controlled by the tectonic framework.(4) There are many surprise sedimentary events in sedimentary formation of the terrestrial basin.(5) Owing to the influence of the tectonization, the deformation frequently occurs in the sedimentary deposit.(6) Because the sediments of the terrestrial basin have the short\|distance transport, the sediments have the low mature index.(7) There are more sedimentary centres, more matter\|sources, narrow sedimentary facies\|zone and the quick facies change in the terrestrial basin.According to the background of the tectonic dynamics, the terrestrial basin can be divided into the extension basin, the compression basin and the shear basin. The three basins differ greatly in the sedimentary characteristics. The extension basin is usually directed at rift basin. The border of the extension basin is mainly the normal fault or growth fault. The plane shape of the extension is zone\|shape. The sedimentary deposit of the extension basin has not strong deformation. The thickness of the sediment on the downthrow wall is greater than that the sediment on the upcast wall. The periodic change of the tectogenesis causes the enlarging or the contract of the extension basin.展开更多
This is the thirteenth in the series of Solar-Terrestrial Physics Symposia organized by the Scientific Committee on Solar-Terrestrial Physics(SCOSTEP)and held approximately every four years.SCOSTEP is engaged in three...This is the thirteenth in the series of Solar-Terrestrial Physics Symposia organized by the Scientific Committee on Solar-Terrestrial Physics(SCOSTEP)and held approximately every four years.SCOSTEP is engaged in three activities:long-term scientific programs,capacity building,and public outreach.The scientific programs are designed to advance our understanding of the solar terrestrial relationship using spaceand ground-based data,cutting-edge models,and theory.SCOSTEP programs are thus of interdisciplinary nature and involve scientists from all over the world.In 2013,the Climate and Weather in the展开更多
This paper presents the networking observation capabilities of Chinese ocean satellites and their diverse applications in ocean disaster prevention,ecological monitoring,and resource development.Since the inaugural la...This paper presents the networking observation capabilities of Chinese ocean satellites and their diverse applications in ocean disaster prevention,ecological monitoring,and resource development.Since the inaugural launch in 2002,China has achieved substantial advancements in ocean satellite technology,forming an observation system composed of the HY-1,HY-2,and HY-3 series satellites.These satellites are integral to global ocean environmental monitoring due to their high resolution,extensive coverage,and frequent observations.Looking forward,China aims to further enhance and expand its ocean satellite capabilities through ongoing projects to support global environmental protection and sustainable development.展开更多
This study proposed an integrated biogeochemical modeling of nitrogen load from anthropogenic and natural sources in Japan.Firstly,the nitrogen load(NL) from different sources such as crop,livestock,industrial plant,u...This study proposed an integrated biogeochemical modeling of nitrogen load from anthropogenic and natural sources in Japan.Firstly,the nitrogen load(NL) from different sources such as crop,livestock,industrial plant,urban and rural resident was calculated by using datasets of fertilizer utilization,population distribution, land use map,and social census.Then,the nitrate leaching from soil layers in farmland,grassland and natural conditions was calculated by using a展开更多
Although it has long been recognized that the oceans are abundant in various kindsof resources,only in recent years it is discovered that marine medicines have their uniqueadvantages and,with the development of scienc...Although it has long been recognized that the oceans are abundant in various kindsof resources,only in recent years it is discovered that marine medicines have their uniqueadvantages and,with the development of science and technology,they are bound to havebroad application prospects.展开更多
Introduction Since Ge isotope is a new nontraditional isotope,the accumulated Ge isotope literatures are quite limited.The available researches mainly focused on two aspects:(1)the measurement of Ge isotopic compositi...Introduction Since Ge isotope is a new nontraditional isotope,the accumulated Ge isotope literatures are quite limited.The available researches mainly focused on two aspects:(1)the measurement of Ge isotopic compositions of geological and extraterrestrial materials,such as igneous rocks,marine sediments,seafloor hydrothermal fluids,hydrothermal Fe-oxyhydroxides,terrestrial high-temperature geothermal fluids,sphalerite,and iron meteorites;and(2)theoretical prediction of germanium isotope fractionation.展开更多
基金Project(2008ZX05002-005) supported by the State Major Special Science and Technology Foundation of China
文摘Based on a synthetic geological study of drilling,well logging and seismic data,core observations and geochemical analysis,it is recognized that Triassic sedimentary facies in the Tahe area of Tarim Basin include braided river deposits filling erosional valleys,and sublacustrine fan,canyon and delta facies.Braided river deposits filling erosional valleys are dominated by coarse-grained lithic quartz sandstone with oblique bedding,and represent the most important sedimentation type of sandstone in the study area.Sublacustrine fan and canyon facies are mainly distributed in the Middle Oil Member.Most delta sediments are deposited in highstand system tract(HST),Because of frequent changes in base level,delta sediments are commonly eroded and rarely preserved.Sedimentary cycles are clearly reflected by lithology,sedimentary structures and well logging data,and are closely related to the changes in lacustrine level.In accordance with the basic principle of sequence subdivision,seven type-I boundaries can be recognized in Triassic strata and six type-I sequences are subdivided correspondingly.In general,lowstand system tract(LST) is well developed within stratigraphic sequences and forms the main body of reservoir sandstone in this area;highstand system tract(HST) and transgressive system tract(TST) are often eroded by upper sequences or missed,Although various factors have different influences on terrestrial sequence stratigraphy,the classical sequence stratigraphy theory proposed by VAIL can be applied to terrestrial strata.
文摘The relation and unity of the tectonic process and sedimentation is being paid a good deal of attention. It is very obvious that the sedimentary process of the terrestrial basin is controlled by tectogenesis. The sedimentary evolution of the basin is the reflection of the tectonic evolution . The sedimentary process of the terrestrial basin has unique characteristics.(1) The scope of the terrestrial basin is mainly controlled by the fault zones.(2) The regional tectonic cycle obviously controls the sedimentary sequence boundary of the terrestrial basin. The periodicity of tectogenesis causes the periodic change of the sedimentary sequence.(3) The sedimentary model of the terrestrial basin is obviously controlled by the tectonic framework.(4) There are many surprise sedimentary events in sedimentary formation of the terrestrial basin.(5) Owing to the influence of the tectonization, the deformation frequently occurs in the sedimentary deposit.(6) Because the sediments of the terrestrial basin have the short\|distance transport, the sediments have the low mature index.(7) There are more sedimentary centres, more matter\|sources, narrow sedimentary facies\|zone and the quick facies change in the terrestrial basin.According to the background of the tectonic dynamics, the terrestrial basin can be divided into the extension basin, the compression basin and the shear basin. The three basins differ greatly in the sedimentary characteristics. The extension basin is usually directed at rift basin. The border of the extension basin is mainly the normal fault or growth fault. The plane shape of the extension is zone\|shape. The sedimentary deposit of the extension basin has not strong deformation. The thickness of the sediment on the downthrow wall is greater than that the sediment on the upcast wall. The periodic change of the tectogenesis causes the enlarging or the contract of the extension basin.
文摘This is the thirteenth in the series of Solar-Terrestrial Physics Symposia organized by the Scientific Committee on Solar-Terrestrial Physics(SCOSTEP)and held approximately every four years.SCOSTEP is engaged in three activities:long-term scientific programs,capacity building,and public outreach.The scientific programs are designed to advance our understanding of the solar terrestrial relationship using spaceand ground-based data,cutting-edge models,and theory.SCOSTEP programs are thus of interdisciplinary nature and involve scientists from all over the world.In 2013,the Climate and Weather in the
基金Supported by Remote Sensing Support for Offshore Ocean Environment and Polar Sea Ice Early Warning Services(102121201550000009004)。
文摘This paper presents the networking observation capabilities of Chinese ocean satellites and their diverse applications in ocean disaster prevention,ecological monitoring,and resource development.Since the inaugural launch in 2002,China has achieved substantial advancements in ocean satellite technology,forming an observation system composed of the HY-1,HY-2,and HY-3 series satellites.These satellites are integral to global ocean environmental monitoring due to their high resolution,extensive coverage,and frequent observations.Looking forward,China aims to further enhance and expand its ocean satellite capabilities through ongoing projects to support global environmental protection and sustainable development.
文摘This study proposed an integrated biogeochemical modeling of nitrogen load from anthropogenic and natural sources in Japan.Firstly,the nitrogen load(NL) from different sources such as crop,livestock,industrial plant,urban and rural resident was calculated by using datasets of fertilizer utilization,population distribution, land use map,and social census.Then,the nitrate leaching from soil layers in farmland,grassland and natural conditions was calculated by using a
文摘Although it has long been recognized that the oceans are abundant in various kindsof resources,only in recent years it is discovered that marine medicines have their uniqueadvantages and,with the development of science and technology,they are bound to havebroad application prospects.
文摘Introduction Since Ge isotope is a new nontraditional isotope,the accumulated Ge isotope literatures are quite limited.The available researches mainly focused on two aspects:(1)the measurement of Ge isotopic compositions of geological and extraterrestrial materials,such as igneous rocks,marine sediments,seafloor hydrothermal fluids,hydrothermal Fe-oxyhydroxides,terrestrial high-temperature geothermal fluids,sphalerite,and iron meteorites;and(2)theoretical prediction of germanium isotope fractionation.
